12166940 has 12 divisors (see below), whose sum is σ = 25550616. Its totient is φ = 4866768.

The previous prime is 12166939. The next prime is 12166949. The reversal of 12166940 is 4966121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12166949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304154 + ... + 304193.

It is an arithmetic number, because the mean of its divisors is an integer number (2129218).

Almost surely, 2^12166940 is an apocalyptic number.

12166940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12166940 is an abundant number, since it is smaller than the sum of its proper divisors (13383676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12166940 is a wasteful number, since it uses less digits than its factorization.

12166940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608356 (or 608354 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 12166940 is about 3488.1141036382. The cubic root of 12166940 is about 229.9996219275. Note that the first 3 decimals are identical.

The spelling of 12166940 in words is "twelve million, one hundred sixty-six thousand, nine hundred forty".